AIR FILTER MONITOR: In most systems that use a blower fan and air ducts, there
is an air filter that is either replaceable or requires cleaning. The filter is usually
located in the air handler, where the blower fan is. This thermostat feature
assists you with keeping track of proper maintenance and/or periodic
replacement intervals for your system’s filter.
The Air Filter Monitor counts the duration of filter usage that has occurred, since
the last time the Filter Monitor has been reset. This feature is for information
purposes only, and does not affect the operation of your heating or cooling
equipment, or the thermostat. When the filter usage duration has expired, the
words “CHANGE FILTER” will appear at the top of the display screen, alternating
with the current DAY and PERIOD.
TO SET THE AIR FILTER DURATION: Move the Set Slide switch to the “FILT/ENRGY”
position. The words “FILTER LEFT” will be shown at the top of the display
screen. Press either of the UP/DOWN buttons to select the desired filter duration
(in days) from the following choices: OFF, 30, 60, 90, 120, 180, or 365. If the
filter duration value is set to “OFF”, then the Air Filter Monitor will be completely
TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the
“FILT/ENRGY” position. The words “FILTER LEFT” will be shown at the top of the
screen. Press both the UP and DOWN buttons together, and the usage counter
will return to the beginning of the value that it originally started counting from.
Refer to the previous paragraph, should you wish to change the starting value for
the filter monitor. Return the Set Slide switch to the RUN position when you are
ENERGY USAGE MONITOR: Your thermostat contains a timer, which records the
amount of “on-time” for your heating and cooling systems. There are three
records that can be displayed for both Heat and Cool modes:
1) The amount of system run time so far for today.
2) The amount of system run time for yesterday.
3) The total cumulative system run time since the timer was reset.
TO VIEW THE HEAT USAGE TIMERS: Place the System Mode switch in the OFF
position, and the Set Slide switch in the FILT/ENRGY position. Press and hold the
NEXT button while sliding the System Mode switch from OFF to HEAT. The words
“TODAY USAGE” will appear at the top of the screen, along with the word “HEAT”
and the amount of heating system runtime (displayed as “HH:MM”, for hours and
minutes). Use the UP/DOWN buttons to cycle between Today’s Usage, Yesterday’s